Typedict

#python   #typing   #typed dict  

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Table of Content

TypedDict describe a structured dictionary/map where the , type of each dictionary value depends on the key, It’s allow mypy and the VSCode to help enforce dictionary structure

from typing import TypedDict

class Movie(TypedDict):
    name: str
    year: int

movie: Movie = {"name": "toy", "year": 1900}
print(type(movie))
d = dict(movie)
print(type(d))
#

total

from typing import TypedDict

class Movie(TypedDict):
    name: str
    year: int

movie: Movie = {"name": "toy"}

mypy output

mypy <file to check.py>

...
error: Missing key "year" for TypedDict "Movie"

from typing import TypedDict

class Movie(TypedDict, total=False):
    name: str
    year: int

movie: Movie = {"name": "toy"}

mypy output

mypy <file to check.py>

Success: no issues found in 1 source file

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Reference

• “TypedDict” In Python Is Actually AWESOME!